CN110194982B - Liquid sulfur-fixing agent and preparation method thereof - Google Patents
Liquid sulfur-fixing agent and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of energy and chemical materials, and provides a liquid sulfur-fixing agent which at least comprises, by weight, 5-35 parts of organic calcium salt, 1-25 parts of metal salt, 1-15 parts of surfactant, 1-30 parts of polyol and 100 parts of water; also provides a preparation method of the liquid sulfur-fixing agent.
Description
Technical Field
The invention relates to the technical field of energy and chemical materials, in particular to a liquid sulfur-fixing agent and a preparation method thereof.
Background
The large amount of coal brings a series of environmental pollution problems, namely SO2And NOxThe pollution is the most serious, toxic and side effects are caused to the environment, the human body and the like, and certain loss is caused to the economy of China. In a new period that the environmental protection requirements are stricter and the energy optimization is perfected, the treatment standard of the coal-fired flue gas pollutants is more rigorous. The sulfur fixing agent used in the briquette products in the current market generally has the problems of poor high-temperature sulfur fixing effect and reduced combustion performance of the briquette, thereby causing certain resource waste. The wet desulfurization process mainly comprises a wet limestone/gypsum desulfurization process, and has the advantages of mature technology, high desulfurization efficiency of over 90 percent, low cost of absorbent, capability of recovering waste residues as gypsum, easy scale deposition, blockage, corrosion and abrasion of equipment, difficulty in long-period stable operation and almost no use of byproducts; the dual-alkali flue gas desulfurization method has high desulfurization efficiency, simple system and less investment; the system is not easy to scale and block, but the process is complex, the maturity is not high, and the by-product sodium sulfate is difficult to regenerate; for ammonia flue gas desulfurization, the process has the advantages of high desulfurization efficiency, capability of keeping the desulfurization efficiency at 95-99%, low energy consumption, high reaction rate and high utilization rate of the absorbent, and has the defect of high cost of the absorbent; therefore, it is difficult to find a sulfur-fixing agent which has a good sulfur-fixing effect, high efficiency, low corrosiveness and stability in a desulfurization process.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the invention provides a liquid sulfur-fixing agent, which at least comprises, by weight, 5-35 parts of organic calcium salt, 1-25 parts of metal salt, 1-15 parts of surfactant, 1-30 parts of polyol and 50-100 parts of water.
As a preferred technical solution, the organic calcium salt in the present invention is selected from one or a combination of more of calcium glycinate, calcium citrate, calcium lactate, calcium gluconate, calcium acetate and calcium threonate.
As a preferable technical scheme, the ratio of the metal salt to the surfactant in parts by weight is (1-1.5): 1.
as a preferred technical solution, the surfactant in the present invention is selected from one or more of ammonium citrate, sodium dodecylbenzene sulfonate, sodium alkyl sulfate, sodium fatty acid, sodium alkyl sulfonate, sodium alkyl polyoxyethylene ether carboxylate, alkylphenol polyoxyethylene, potassium monododecyl phosphate, lauryl alcohol ether phosphate, coconut diethanolamide, fatty acid potassium soap, lauramidopropyl betaine, and lauramidopropyl amine oxide.
In a preferred embodiment, the surfactant in the present invention is selected from one or more of sodium dodecyl benzene sulfonate, alkylphenol ethoxylates, and coconut diethanolamide.
In a preferred embodiment, the metal salt in the present invention is selected from one or more of sodium chloride, calcium chloride, ferric chloride, magnesium chloride, potassium carbonate, and ferric nitrate.
As a preferred technical solution, the weight ratio of the surfactant to the polyol in the present invention is 1: (1-2).
In a preferred embodiment, the polyol is selected from one or more of ethylene glycol, glycerol, butanetriol, butanediol, pentanetriol, pentanediol, and inositol.
In a preferred embodiment, the polyol is selected from one or more of ethylene glycol, butanetriol and inositol.
The second aspect of the invention provides a preparation method of the liquid sulfur-fixing agent, which at least comprises the steps of weighing raw materials according to parts by weight, sequentially adding the surfactant, the organic calcium salt, the metal salt, the polyol and the water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Has the advantages that:
the sulfur-fixing agent prepared by the invention has good desulfurization effect, is in a liquid state and is convenient to use and add compared with the existing sulfur-fixing agent, and contains combustion-supporting components, so that the heat can not be reduced; the equivalent sulfur-fixing agent has high desulfurization efficiency, effectively reduces the use of the sulfur-fixing agent, reduces the cost, does not corrode equipment, ensures the desulfurization effect, reduces the pollutant discharge and saves the resources.
The technical features, content and advantages described in the previous sections of the invention will be more readily understood with reference to the following details.
Detailed Description
Unless otherwise indicated, implied from the context, or customary in the art, all parts and percentages herein are by weight and the testing and characterization methods used are synchronized with the filing date of the present application. To the extent that a definition of a particular term disclosed in the prior art is inconsistent with any definitions provided herein, the definition of the term provided herein controls.
The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.
The words "preferred", "preferably", "more preferred", and the like, in the present invention, refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention. The sources of components not mentioned in the present invention are all commercially available.
The first aspect of the invention provides a liquid sulfur-fixing agent, which at least comprises, by weight, 5-35 parts of organic calcium salt, 1-25 parts of metal salt, 1-15 parts of surfactant, 1-30 parts of polyol and 50-100 parts of water.
In some embodiments, the liquid sulfur-fixing agent comprises, by weight, at least 10 to 30 parts of organic calcium salt, 0 to 15 parts of metal salt, 0 to 15 parts of surfactant, 0 to 20 parts of polyol, and 50 to 100 parts of water.
In some preferred embodiments, the liquid sulfur-fixing agent at least comprises, by weight, 15-25 parts of organic calcium salt, 6-14 parts of metal salt, 5-10 parts of surfactant, 7-16 parts of polyol and 80-100 parts of water.
In some more preferred embodiments, the liquid sulfur-fixing agent comprises, by weight, at least 20 parts of organic calcium salt, 12 parts of metal salt, 10 parts of surfactant, 15 parts of polyol, and 100 parts of water.
Organic calcium salt
In some embodiments, the organic calcium salt is selected from the group consisting of calcium glycinate, calcium citrate, calcium lactate, calcium gluconate, calcium acetate, calcium threonate, or combinations thereof; preferably, the organic calcium salt is selected from one or more of calcium glycinate, calcium citrate, calcium acetate and calcium threonate; more preferably, the organic calcium salt is selected from one or more of calcium glycinate and calcium citrate; most preferably, the organic calcium salt is calcium citrate.
The organic calcium salt can absorb sulfur dioxide and reacts with the sulfur dioxide to generate calcium sulfate, calcium sulfite and the like; among them, the applicant found that the absorption of sulfur dioxide is most excellent in the present invention by using calcium citrate.
Surface active agent
In some embodiments, the weight ratio of the metal salt to the surfactant is (1-1.6): 1; preferably, the weight ratio of the metal salt to the surfactant is (1.2-1.4): 1; more preferably, the weight ratio of the metal salt to the surfactant is 1.2: 1.
in some embodiments, the surfactant is selected from the group consisting of ammonium citrate, sodium dodecylbenzene sulfonate, sodium alkyl sulfate, sodium fatty acid, sodium alkyl sulfonate, sodium alkyl polyoxyethylene ether carboxylate, polyoxyethylene alkyl ether, potassium monododecyl phosphate, lauryl alcohol ether phosphate, coconut diethanolamide, potassium soap of fatty acid, lauramidopropyl betaine, lauramidopropyl amine oxide; preferably, the surfactant is selected from one or more of ammonium citrate, sodium dodecyl benzene sulfonate, sodium alkyl polyoxyethylene ether carboxylate, alkylphenol polyoxyethylene, coconut diethanolamide and lauramidopropyl amine oxide.
In some embodiments, the surfactant is selected from the group consisting of sodium dodecylbenzene sulfonate, alkylphenol ethoxylates, cocodiethanolamide; preferably, the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol ethoxylates and coconut diethanolamide.
In some embodiments, the weight parts ratio of the sodium dodecyl benzene sulfonate, the alkylphenol ethoxylates and the coconut diethanolamide is (4-8): (1-4): 1; preferably, the weight parts of the sodium dodecyl benzene sulfonate, the alkylphenol polyoxyethylene and the coconut diethanolamide are (5-7): (2-3): 1; more preferably, the weight part ratio of the sodium dodecyl benzene sulfonate, the alkylphenol ethoxylates and the coconut diethanolamide is 6: 2.5: 1.
after the sulfur-fixing agent is sprayed on the surface of the coal or cement raw material, the surface energy and the hydrophilicity of the coal or cement raw material are enhanced by the compounded surfactant, even a part of the sulfur-fixing agent enters the pores of the coal or cement raw material, so that the surface of the coal or cement raw material is in a loose network structure, the contact area with sulfur dioxide is increased, and the adsorption performance to the sulfur dioxide is improved; the applicants have unexpectedly found that the use of a compounded surfactant extends the useful life of the sulfur-fixing agent presumably due to the polar groups in the alkylphenol ethoxylates and coconut diethanolamide and Fe3+、Mg2+The aggregation of polar head groups in the surfactant is prevented by the interaction of the plasma metal ions, so that the winding of an alkane chain is prevented, the stability of the surfactant is improved, and the service life of the sulfur fixing agent is prolonged.
Metal salts
In some embodiments, the metal salt is selected from the group consisting of sodium chloride, calcium chloride, ferric chloride, magnesium chloride, potassium carbonate, ferric nitrate; preferably, the metal salt is selected from one or more of magnesium chloride, ferric chloride, potassium carbonate and ferric nitrate; more preferably, the metal salt is selected from one or more of magnesium chloride and ferric chloride; most preferably, the metal salt is a combination of magnesium chloride and ferric chloride.
In some embodiments, the weight parts ratio of magnesium chloride to ferric chloride is 1: (1-6); preferably, the weight ratio of the magnesium chloride to the ferric chloride is 1: (2-5); more preferably, the weight part ratio of the magnesium chloride to the ferric chloride is 1: 3.5.
the metal salts have catalytic oxidation effect and can catalyze the oxidation of calcium sulfite into calcium sulfate; the metal salts can further improve the desulfurization efficiency except for the catalytic oxidation effect, because the metal ions inhibit the growth of calcium sulfate crystals in a specific direction, the sheet structure of the calcium sulfate crystals is changed, the coverage area of the generated calcium carbonate on the raw materials of coal or cement is reduced, and the adsorption of sulfur dioxide is improved; the applicant unexpectedly finds that when the weight ratio of the metal salt to the surfactant is (1-1.5): 1, the corrosion to the equipment is avoided, the protection to the equipment is increased, and the possible reason is guessed to be that polar groups on the surfactant interact with calcium ions, and a longer carbon chain of the surfactant forms steric hindrance, so that the form of the calcium sulfate crystal is changed, the solubility of the calcium sulfate crystal is reduced, the calcium sulfate crystal is difficult to permeate into a capillary hole of the equipment, and the equipment cannot be corroded at all.
Polyhydric alcohols
In some embodiments, the weight part ratio of the surfactant to the polyol is 1: (1-2); preferably, the weight ratio of the surfactant to the polyol is 1: (1.4-1.6); more preferably, the weight ratio of the surfactant to the polyol is 1: 1.5.
in some embodiments, the polyol is selected from the group consisting of a combination of one or more of ethylene glycol, glycerol, butanetriol, butanediol, pentanetriol, pentanediol, inositol; preferably, the polyhydric alcohol is selected from one or more of ethylene glycol, butanetriol, pentanediol and inositol.
In some embodiments, the polyol is selected from the group consisting of one or more of ethylene glycol, butanetriol, inositol; preferably, the polyhydric alcohol is a combination of ethylene glycol, butanetriol and inositol.
In some embodiments, the weight ratio of the ethylene glycol, the butanetriol and the inositol is (2-8): (1-3): 1; preferably, the weight ratio of the ethylene glycol to the butanetriol to the inositol is (3-7): (1.5-2.5): 1; more preferably, the weight part ratio of the glycol to the butanetriol to the inositol is 5: 2: 1.
when the sulfur-fixing agent is sprayed on coal or cement raw meal, the moisture can be volatilized due to the higher temperature in the system, so that the dissolving amount of sulfur dioxide is reduced. When the composition of glycol, butanetriol and inositol is added, the desulfurization efficiency of the sulfur-fixing agent is improved, presumably because polar groups of the compound surfactant interact on the surface of coal or cement raw materials to form a 'net-shaped structure', but the formed 'net-shaped structure' is loose, after a certain amount of polyhydric alcohol is added, the formed 'net-shaped structure' is combined again at the loose part of the net-shaped structure to form a proper and compact net-shaped structure, and the dissolution of sulfur dioxide is not influenced while the volatilization of water is prevented. When the surfactant: the weight portion ratio of the polyhydric alcohol is 1: (1-2) when the content is not in the range, the formed net structure is loose, so that water is volatilized; or the formed net structure is more compact and hinders the dissolution of the sulfur dioxide.
The second aspect of the invention provides a preparation method of the liquid sulfur-fixing agent, which at least comprises the steps of weighing raw materials according to parts by weight, sequentially adding the surfactant, the organic calcium salt, the metal salt, the polyol and the water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
The present invention is described in detail below with reference to examples, which are provided for the purpose of further illustration only and are not to be construed as limiting the scope of the present invention, and the insubstantial modifications and adaptations thereof by those skilled in the art based on the teachings of the present invention will still fall within the scope of the present invention.
Example 1
A liquid sulfur-fixing agent comprises, by weight, 20 parts of organic calcium salt, 12 parts of metal salt, 10 parts of surfactant, 15 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 6: 2.5: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 3.5; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 5: 2: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 2
The liquid sulfur-fixing agent comprises, by weight, 5 parts of organic calcium salt, 1 part of metal salt, 1 part of surfactant, 1 part of polyol and 50 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 4: 1: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 1; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 2: 1: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 3
A liquid sulfur-fixing agent comprises, by weight, 35 parts of organic calcium salt, 24 parts of metal salt, 15 parts of surfactant, 30 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 8: 4: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 6; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 8: 3: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 4
A liquid sulfur-fixing agent comprises, by weight, 15 parts of organic calcium salt, 6 parts of metal salt, 5 parts of surfactant, 7 parts of polyol and 80 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 5: 2: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 2; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 3: 1.5: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 5
A liquid sulfur-fixing agent comprises, by weight, 30 parts of organic calcium salt, 14 parts of metal salt, 10 parts of surfactant, 16 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 7: 3: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 5; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 7: 2.5: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 6
A liquid sulfur-fixing agent comprises, by weight, 20 parts of organic calcium salt, 5 parts of metal salt, 10 parts of surfactant, 15 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 6: 2.5: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 3.5; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 5: 2: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 7
A liquid sulfur-fixing agent comprises, by weight, 20 parts of organic calcium salt, 30 parts of metal salt, 10 parts of surfactant, 15 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 6: 2.5: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 3.5; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 5: 2: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 8
A liquid sulfur-fixing agent comprises, by weight, 20 parts of organic calcium salt, 12 parts of metal salt, 10 parts of surfactant, 3 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 6: 2.5: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 3.5; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 5: 2: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 9
A liquid sulfur-fixing agent comprises, by weight, 20 parts of organic calcium salt, 12 parts of metal salt, 10 parts of surfactant, 30 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 6: 2.5: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 3.5; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 5: 2: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 10
A liquid sulfur-fixing agent comprises, by weight, 20 parts of organic calcium salt, 12 parts of metal salt, 10 parts of surfactant, 15 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 1: 6: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 3.5; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 5: 2: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 11
A liquid sulfur-fixing agent comprises, by weight, 20 parts of organic calcium salt, 12 parts of metal salt, 10 parts of surfactant, 15 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate and alkylphenol polyoxyethylene, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene is 6: 2.5, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, and the alkylphenol polyoxyethylene ether is purchased from the company Schchen Taixin Lanxing science and technology Limited, OP-4 TX-4; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 3.5; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 5: 2: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 12
A liquid sulfur-fixing agent comprises, by weight, 20 parts of organic calcium salt, 12 parts of metal salt, 10 parts of surfactant, 15 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 6: 2.5: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric nitrate, and the weight ratio of the magnesium chloride to the ferric nitrate is 1: 3.5; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 5: 2: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 13
A liquid sulfur-fixing agent comprises, by weight, 20 parts of organic calcium salt, 12 parts of metal salt, 10 parts of surfactant, 15 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 6: 2.5: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 3.5; the polyhydric alcohol is a combination of ethylene glycol and butanetriol, and the weight ratio of the ethylene glycol to the butanetriol is 5: 2;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Example 14
A liquid sulfur-fixing agent comprises, by weight, 20 parts of organic calcium salt, 12 parts of metal salt, 10 parts of surfactant, 15 parts of polyol and 100 parts of water;
the organic calcium salt is calcium citrate, and the CAS number is 813-94-5; the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether and coconut diethanolamide, and the weight ratio of the sodium dodecyl benzene sulfonate to the alkylphenol polyoxyethylene ether to the coconut diethanolamide is 6: 2.5: 1, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, the alkylphenol polyoxyethylene ether is purchased from the company of Schchen Taixin Lanxing science and technology Limited, OP-4TX-4, and the CAS number of the coconut oil acid diethanolamide is 52950-18-2; the metal salt is a combination of magnesium chloride and ferric chloride, and the weight ratio of the magnesium chloride to the ferric chloride is 1: 3.5; the polyhydric alcohol is a combination of glycol, butanetriol and inositol, and the weight ratio of the glycol to the butanetriol to the inositol is 1: 5: 1;
a preparation method of the liquid sulfur-fixing agent comprises the steps of weighing raw materials according to parts by weight, sequentially adding a surfactant, an organic calcium salt, a metal salt, polyol and water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
Performance testing
1. Sulfur fixation efficiency
The sulfur-fixing efficiency of the sulfur-fixing agents prepared in examples 1 to 14 was measured according to the test method of GB/T31098-2014, and the test results are shown in Table 1.
| Examples | Sulfur fixation efficiency (%) | Examples | Sulfur fixation efficiency (%) |
| Example 1 | 87 | Example 8 | 41 |
| Example 2 | 50 | Example 9 | 54 |
| Example 3 | 55 | Example 10 | 62 |
| Example 4 | 64 | Example 11 | 49 |
| Example 5 | 73 | Example 12 | 58 |
| Example 6 | 31 | Example 13 | 44 |
| Example 7 | 54 | Example 14 | 56 |
2. Evaluation of Using Effect
The using conditions of the devices in example 1, example 6, example 7, example 10, example 11 and example 12 are visually evaluated to determine the strength of the corrosion resistance, and the results of the corrosion resistance from large to small are as follows:
example 1> example 10> example 7> example 6> examples 11, 12.
The foregoing examples are illustrative only, and serve to explain some of the features of the present disclosure. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. And that advances in science and technology will result in possible equivalents or sub-substitutes not currently contemplated for reasons of inaccuracy in language representation, and such changes should also be construed where possible to be covered by the appended claims.
Claims (3)
1. The liquid sulfur-fixing agent is characterized by comprising, by weight, 5-35 parts of organic calcium salt, 1-25 parts of metal salt, 1-15 parts of surfactant, 1-30 parts of polyol and 50-100 parts of water;
the surfactant is a combination of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene and coconut diethanolamide, and the weight parts of the surfactant are (4-8): (1-4): 1;
the polyhydric alcohol is a combination of ethylene glycol, butanetriol and inositol, and the weight ratio is (2-8): (1-3): 1;
the weight ratio of the surfactant to the polyol is 1: (1-2);
the metal salt is selected from one or more of sodium chloride, calcium chloride, ferric chloride, magnesium chloride, potassium carbonate and ferric nitrate;
the weight ratio of the metal salt to the surfactant is (1-1.5): 1.
2. the liquid sulfur-fixing agent of claim 1, wherein the organic calcium salt is selected from the group consisting of calcium glycinate, calcium citrate, calcium lactate, calcium gluconate, calcium acetate, and calcium threonate.
3. A method for preparing a liquid sulfur-fixing agent according to any one of claims 1 to 2, which comprises at least the steps of weighing the raw materials in parts by weight, sequentially adding the surfactant, the organic calcium salt, the metal salt, the polyol and the water into a reaction kettle, and uniformly stirring at normal temperature to obtain the liquid sulfur-fixing agent.
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